← 研踪 PaperTrailarXiv:2610.11522 · v2
A joint error metric for scoring CFD against wind tunnel data, scaled by the robust spread of the participants (AutoCFD5 Case 2)
首次提交 2026-10-08 16:54
版本更新 2026-11-12 20:38
雷达观测 2026-11-13 14:15
摘要
Case 2 of the 5th Automotive CFD Prediction Workshop (AutoCFD5) compares the participants' CFD results with wind tunnel measurements of surface pressure, velocity profiles and force coefficients. To place each run on a diagram of error against computational cost, these quantities must be combined into one number. This note defines that number, the joint error. Following the practice of interlaboratory proficiency testing (ISO 13528), every deviation from the experiment is expressed in units of the spread of the participants' results at that point, estimated robustly with the standard's Algorithm A. The point-wise spreads are pooled into one scale per component, so that every measurement point carries equal weight within its component. Configurations 2a and 2b share these scales and are compared only on the measurements both have, so that their errors can be shown on one diagram. The joint error is a fixed weighted sum of five component errors. The scales are computed once from all AutoCFD5 submissions received by 28 October 2026 and then frozen, so that scores are reproducible and comparable across workshops.
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v2 · 2026-11-12 20:38 · 最新观测版本
A joint error metric for scoring CFD against wind tunnel data, scaled by the robust spread of the participants (AutoCFD5 Case 2)
Case 2 of the 5th Automotive CFD Prediction Workshop (AutoCFD5) compares the participants' CFD results with wind tunnel measurements of surface pressure, velocity profiles and force coefficients. To place each run on a diagram of error against computational cost, these quantities must be combined into one number. This note defines that number, the joint error. Following the practice of interlaboratory proficiency testing (ISO 13528), every deviation from the experiment is expressed in units of the spread of the participants' results at that point, estimated robustly with the standard's Algorithm A. The point-wise spreads are pooled into one scale per component, so that every measurement point carries equal weight within its component. Configurations 2a and 2b share these scales and are compared only on the measurements both have, so that their errors can be shown on one diagram. The joint error is a fixed weighted sum of five component errors. The scales are computed once from all AutoCFD5 submissions received by 28 October 2026 and then frozen, so that scores are reproducible and comparable across workshops.
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